Geography, cytology, number of species. Native of Australia.
Endemic to Australia. Australian states and territories: Western Australia.
South-West Botanical Province. Darling district: Margaret River to Albany,
within 50 km of the coast. A genus of 1 species; 1 species in Western Australia.

Etymology. From the Greek for "a point", alluding to the
connective appendage, and the ending -onia to suggest affinity with
Persoonia.